Can-sealing machine



c. T.\SMALL.

CAN SEALING MACHINE.

APPLICATION FILED JULY 9.1920.

msm wfl mm m 31, 11922 2 SHEET SSHEET 1.

Patented @ct. 3i,

tlhilfl STATES enrich CHESLEY T. SMALL, OF ST. LOUIS, MISSDUIREBY. .ASSIGN-DR TO III-3,52. NATIONAL BANK IN ST. LOUIS, OF ST. LOUIS, MISSOURI.

CAN-SEALING h'IAGI -HNE.

Application filed July 9, 1920. Serial No. 394,889.

T 0 all whomit may concern:

Be it known that I, CHnsLnY T. SMALL, a citizen of the United States of America, residing at the city of St. Louis, @tate of Missouri, have inventeda certain new and useful Can-Sealing Machine, of which the following is such a full, clear and exact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, forming part of this specification.

My invention relates to improvements in can sealing machinery and more particularly to improvements in that class of can sealing machinery in which the seaming roll is carried by a reciprocating part or shuttle, such for instance. as that shown in my prior application Serial No. 258,587, filed October 17,1918.

One object of my invention is to provide improved means for securing the proper re lation between the can and seaming roll when the seaming roll is adjusted for different sizes of cans. Another object of my invention is to provide means for compensatfor the wear of the seaming roll. Still another object of my invention is to provide improved means for arresting the return movement of the shuttle.

In the accompanying drawings which illustrate so much of a can sealing machine as is necessary to illustrate my invention. Fig. 1 is a plan view, Fig. 2 is a front elevation, Fig. 8 is an enlarged section taken on the line 33 of Fig. 2 and Fig. 4% is a diagrammatic view.

10 indicates a rotary member adapted to carry the cans to be sealed. This rotary member 10 is carried on the central shaft 11 forming its axis of rotation. 12 are can rotating spindles carried by the rotary member 10. Arranged adjacent to the rotary member 10-is segmental member 13 which is normally stationary but which may be raised and'lowered to adapt the machine to cans of different heights as is pointed out in my prior application above referred to 14: is a radially adjustable block controlled by hand wheels 15 and having slidingly mounted in it the reciprocating member or shuttle 16 carrying the seaming roll 17 which is adapted to cooperate with the cans rotated by means of the can spindles 12. Attached to the shuttle 16 by means of bolts 19 is a plate 18 having at one end 'a beveled face 20 for engaging with the member for arrestingits return movement as will be hereinafter more particularly pointed out.

The shuttle '16 is held in its normal position by a sprocket chain 21 secured at. one end to the plate 18 and passing arounda shive 22 carried by a bracket 23 secured to the segmental member 13. The opposite end of the sprocket chain 21 is secured to a spring 24: which is in turn secured to a bracket 25 also carried by the segmental member As all these parts are supported by the segmental member 13, the movement of this member vertically to accommodate the machine to different heights of cans will not in any way interfere with the proper tension of the spring 24.

Thereturn movement. of the shuttle 16 is arrested by a yielding stop 26 having an inclined cam face 27 adapted to; be struck by the inclined face 20 on the plane '18 and a second cam face 28 with which the face 20 is adapted to make contact after coming into contact with the cam face 27. The stop 26 is held in position against the block 14 by means of bolts 29 around which are coilsprings 30 hearing against the said stop and holding its pivot point 31 in contact with said'member 1 1. It will be evident that by this construction, the return movement of the shuttle is arrested without jar to the machine.

Arranged adjacent to each of the cam rotating spindles 12 is finger 32 which is adapted to engage with a hook 33 carried on the shuttle 16 so as to move the shuttleforward together with rotating can in order to form the seam. The book 33 is released from the finger 32 by a releasing cam 84. In order that the adjustment of the seaming roll 1'? relative to the center line passing through the axis of the member 10 and the spindle 12 may not be disturbed by the adjustment of the block fo different sizes of cans I arrange the face of the finger 32 along a line A, parallel with line B passing through the axis of the parts 11 and 12.

The wear on the seaming roll caused by its rapid rotation in contact with the metal of can tends to increase the distance between the center of the seaming roll and the center of the cam and thus decrease the pressure upon the can. If the center of the seaming roll 17 is placed upon the line 13 passing through the axis of the parts 11 and 12, the

. wear of the finger 32 will also tend to increase the distance between the centers of the parts, as this wear will cause the center of the roll 17 to travel towards the right on the in Figure 4:, the wear on the. face or the finger 32 tends to decrease the distance between the centers of 12 and 1'? and thus compensates for the wear of the seaming roll itself. By this construction, I am able to considerably increase thetimedurin which the machine may be operated without adjustment of the seaming roll to compensate for wear. y

I claim 1. In a canisealing machine, the combination with a rotary member carryingthe cans to be sealed, of a reciprocating seaming roll cooperating with said. rotary member, and

spring controlled cushioning member movable substantially at right angles to the direction of travel of said seaming roll for arresting the return movement of said seaming roll. i

2. In a can sealing machine, he combination with a rotary member carrying the cans to be sealed, of a shuttle carrying a seaming-roll and cooperating with said rotary'member, and a spring controlled cushioning member provided with a plurality of contact faces adapted to come successively into contact with said shuttle to arrest its return movement.

I 3. In a can sealing machine, the combination with a rotary member carrying the cans to be sealed, of a shuttle carrying a seaming roll and cooperating with said rotary memher, and a spring controlled cushioning member moving substantially at right angles to the direction of travel of said shuttle and provided with a plurality of oontactliaces adapted to come successively into contact with said shuttle to arrest its return movement.

4. In a can sealing machine, the combination with a rotary member carrying the cans to be sealed, of a normally stationary member adjacent to said rotary member, ashuttle slidingly carried by said normally stationary member and provided with a seaming roll, and a cushioning member carried by said normally stationary member and moving substantially at right angles to the travel or said shuttle for arresting its return movement.

5. In a can sealing machine, the combination with a rotary member carrying the cans to be sealed, of a normally stationary member adjacent to said rotary member, a shut tle slidingly carried by said normally stationary member and provided with a seaming roll, a cushion member carried by said normally stationary member and movable substantially at right angles to the travel oi said shuttle for arresting its return movement, a spring for said cushioning member, and means for varying the tension of said spring. v

6. In a can sealing machine, the combination with a rotary member carrying the cans tobe sealed, of a normally stationary member adjacent to said rotary member, a shuttie slidingly carried by said normally stationary member and provided with a seaming roll, a pulley carried by said normally stationary member, a flexible connection attached to said shuttle and passing around said pulley, and a spring attached to said flexible connection and to said normally stationary member.

7. In a can sealing machine, the combinationwith a rotary member carrying a can spindle, of a reciprocating member carrying a seaming roll to cooperate with the can actuated by said spindle, and a finger carried by said rotary member and adapted to engage and move said reciprocating member, said finger having its contact face substantially parallel with a line passing through the axes of the rotary member and can spindle.

8. In a can sealing machine, the combination with a rotary member carrying a can spindle, of a reciprocating member carrying a seaming roll and operating on the cam actuated by said spindle, and a finger carried by said rotary memberto engage and actuate said reciprocating 111ember,said finger being so situated relative to said can spindle as to engage with the reciprocating member while the seaming roll in advance of a line passing through the axes of said rotary member and can spindle.

9. In a can sealing machine, the combination with a rotary member carrying a can spindle, of a reciprocating member carrying a seaming roll operating on the can actuated by said spindle, said memberhaving a curved path approximately concentric with the axes of. said rotary member, and a finger carried by said rotary member to engage with and operate said reciprocating member, said finger beingso situated relative to the can. spindle as to engage with the reciprocating member while the seaming roll is in advance of a line passing through the axes of the rotary member and can spindle.

In testimony whereof, I have hereunto set my hand and affixed my seal.

GHESLEY T. SMALL. [1,. 8.] 

